Spot-backed Antshrike

hypoedaleus guttatus

Thamnophilidae · Antbirds, Antwrens

Disc 2 · 2001 listed
Disc 3 · 2006 listed
Disc 1 · 2011 listed

The account

Description

19 cm. Male is black above with white drop-shaped spots. Wings and tail black, banded with white. Below white, the lateral chest feathers with black rims. Belly and crissum ochraceous.

The female is buffy with white areas.

The disc records this picture against the bird without a caption. Disc 3 · 2006

Where it was recorded

The discs' own checklists select Spot-backed Antshrike at 20 localities.

Historical checklist localities on the disc's own area map — the red dots the original program drew, placed by its recovered projection. Not a range map: it shows the places whose checklists record the bird, nothing more. 1 recorded locality lies beyond the map's edge and is listed below instead.1 has no usable coordinate and is listed below unplotted.

Angra dos Reis ANRB
Barreiro Rico BRSB
Boraceia BOSB
Fazenda Campininha FZSB
Fazenda Intervales FASB
Fazenda Paraiso PASB
Ilha do Cardoso ILSB
Jureia-Peruibe JUSB position not recoverable
Morro do Diabo MOSB outside the map
Nucleo Sta. Virginia NUSP
Parati PARB
PE Carlos Botelho PCSB
PE Jacupiranga PJSB
Reserva Ecológica Guapiacú RERB
Serra da Cantareira SRSB
Serra dos Orgãos SRRB
Serra dos Tucanos SDTC
Serras de Japi e Ermida SDSB
Sete Barras STSB
Ubatuba UBSB

How the map was made

The original program computed each red dot at display time from the locality's coordinates, using its map library and one of five base maps drawn for the screen widths of the day. That library's projection — an oblique rotation of the sphere about the map's own centre, 23.7°S 47.4°W — was read from the program and checked against the graticule the same program drew into the base maps: it reproduces every grid intersection to within about a pixel. The dots here use that projection on the 1280-pixel base map, with the coordinates the discs record. Nothing was placed by hand, no modern map data was used, and a place whose coordinate is incomplete, out of range or beyond the map's edge is listed rather than guessed.

The discs carried location maps only; none shows a distribution or range.

Voice

Song is a fast series of high whistles, unlike any other antshrike, lasting for 4-6 sec. Calls are a piercing 'pyeeeeeeyeuw' and an abrupt 'chrrt' (⁴⁴).

Behavior

Forages in the mid-canopy of humid forest usually in dense foliage. Solitary or in pairs.

Habitat and status

A canopy-dwelling antshrike of the Atlantic forest region. Relatively common in humid primary and secondary dense forest and borders.

Distribution

Throughout the area. Most common in the Serra do Mar between Rio de Janeiro and São Paulo; less so in the Serra Mantiqueira. Also south of São Paulo, e. g. near Iguape, PE Jacupiranga and Cananeia. Found inland in suitable habitat as far as the Pantanal in the northwest (⁵⁶,¹¹⁴) and Paraguay. A lowland species, found up to 600 meters. To about 500 meters at Fazenda Intervales (Remold).

Decoded from the disc's own bytes. Each part is shown under the heading the disc files it under, and the wording, spelling and punctuation are the author's.

Vocalizations

Song. Boraceia, 11/14/93. Sunny, 30°C. Forest.
Song. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Forest.
Calls. 10/15/99, Corisco trail, Picinguaba, east of Ubatuba. Sunny, 30°C. Primary forest. With Procnias nudicollis.
Song. Recording by T. A. Parker, III.
Call, Caraguatatuba, 8/14/00. Recording by J. Minns.

Recording files on the disc

5352.mp3 Song. Boraceia, 11/14/93. Sunny, 30°C. Forest.
9840.wav Song. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Forest.
734.wav Calls. 10/15/99, Corisco trail, Picinguaba, east of Ubatuba. Sunny, 30°C. Primary forest. With Procnias nudicollis.
4695.mp3 Song. Recording by T. A. Parker, III.
14667.mp3 Call, Caraguatatuba, 8/14/00. Recording by J. Minns.

Across the three discs

The work was published on three discs — Disc 2 in 2001, Disc 3 in 2006 and Disc 1 in 2011. Where they differ, that is a difference between historical releases, and it is never merged away. The 2011 disc is not treated as correcting the earlier ones.

Which discs list this bird

Disc 2 · 2001 — in this disc's bird list
Disc 3 · 2006 — in this disc's bird list
Disc 1 · 2011 — in this disc's bird list

How that was established

Disc 2 · 2001: aux_nonzero;local_checklist_byte45_flag_1
Disc 3 · 2006: aux_nonzero;local_checklist_byte45_flag_1
Disc 1 · 2011: aux_nonzero;local_checklist_byte45_flag_1

The disc's own record fields that place the bird on its list: a non-empty entry in the species table, and the byte that marks it as selected on a local checklist.

The account in the Disc 1 · 2011 revision

The 2011 Disc 1 revision carries this account text unchanged from the Disc 3 release.

The work's own taxonomy

The discs carried three parallel name schemes. All three are shown as recovered; none is a modern taxonomy and none has been updated.

Scheme	Scientific name	English name	Family
WORLD	hypoedaleus guttatus	Spot-backed Antshrike	Thamnophilidae
CLEMENTS	hypoedaleus guttatus	Spot-backed Antshrike	Thamnophilidae
AOU_HM	hypoedaleus guttatus	Spot-backed Antshrike	Thamnophilidae

Source details

Identifier on this site: seb_species_0106
Account identifier: seb_account_0106
Account number on the disc: 106
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative